Cisco Systems 3750E manual Discovery Through Different Management VLANs

Chapter 6 Clustering Switches

Planning a Switch Cluster

Figure 6-3 Discovery Through Different VLANs

Command device

VLAN 62 VLAN trunk 9,16

VLAN 50

VLAN 62

VLAN trunk 9,16

VLAN 16 VLAN trunk 4,16

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Discovery Through Different Management VLANs

Catalyst 2960, Catalyst 2970, Catalyst 3550, Catalyst 3560, Catalyst 3560-E, Catalyst 3750, or Catalyst 3750-E cluster command switches can discover and manage cluster member switches in different VLANs and different management VLANs. As cluster member switches, they must be connected through at least one VLAN in common with the cluster command switch. They do not need to be connected to the cluster command switch through their management VLAN. The default management VLAN is VLAN 1.

Note If the switch cluster has a Catalyst 3750-E switch or switch stack, that switch or switch stack must be the cluster command switch.

The cluster command switch and standby command switch in Figure 6-4(assuming they are Catalyst 2960 Catalyst 2970, Catalyst 3550, Catalyst 3560, Catalyst 3560-E, Catalyst 3750, or Catalyst 3750-E cluster command switches) have ports assigned to VLANs 9, 16, and 62. The management VLAN on the cluster command switch is VLAN 9. Each cluster command switch discovers the switches in the different management VLANs except these:

•Switches 7 and 10 (switches in management VLAN 4) because they are not connected through a common VLAN (meaning VLANs 62 and 9) with the cluster command switch

•Switch 9 because automatic discovery does not extend beyond a noncandidate device, which is switch 7

Catalyst 3750-E and 3560-E Switch Software Configuration Guide

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